Lady Gaga performs her bloody routine during her Monster Ball tour. British fans protested the singer's routine when she performed it in Manchester hours after a shooting spree left 12 dead.

Lady Gaga is being labeled a monster after performing a blood-spattered performance in Britain, hours after a local taxi driver slaughtered 12 people.

Parents and fans protested the singer's concert in Manchester Wednesday after she performed a routine in which an anonymous killer bit her neck and left her covered in blood, London's Daily Mail reports.

Gaga wore a revealing leather corset and proceeded to be attacked by a man dressed in black who gnawed on her throat, causing blood to spurt down her chest and into her cleavage. She then lay "dying" in a pool of blood.

England was left in shock Wednesday when a taxi driver named Derrick Bird went on a shooting rampage in the northern Lake District, killing 12 people and then himself. It was the region's deadliest shooting spree since 1996.

"What happened...is very fresh in people's minds and given all the violence which happened...just hours earlier, pop stars should be more a lot more sensitive and not be featuring scenes of murder in their shows," one mother told the Daily Mail after taking her 14-year-old to Gaga’s show.

Lady Gaga performs her bloody routine during her Monster Ball tour. British fans protested the singer's routine when she performed it in Manchester hours after a shooting spree left 12 dead.

(Cumbria Police)

The 23-year-old songstress has performed the bloody routine several times during her Monster Ball tour.

She previously doused herself in fake blood at the MTV Video Music Awards last year after a chandelier "fell" onto her before she broke into song.